Department of Mathematical Sciences, Ritsumeikan University Web Page

• Date : 8 Aug. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Hideyuki Tanaka  (Ritsumeikan University)
• Title: On the convergence of an approximate nonlinear filer

• Date : 1 Aug. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Ngo Hoang-Long (Hanoi National University of Education)
• Title: Euler approximation for stochastic differential equations driven by fractional Brownian motions

　Jiro Akahori (Ritsumeikan University, Research Center for Finance)
　Masafumi Hayashi (University of the Ryukyus)
　Arturo Kohatsu-Higa (Ritsumeikan University, Research Center for Finance)
　Josef Teichmann (ETHZ)
　Masayuki Uchida (Osaka University)

• Date : 25 Jul. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Hoang-Long Ngo  (Hanoi National University of Education)
• Title: Weak approximation of SDE with irregural drift

• Date : 18 Jul. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Jyunichi Takahara (Kyoto University)
• Title: Wegner estimate for a generalized alloy type potential

• Date : 11 Jul. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Kalyan Sinha
• Title: Stopped CCR-flows and Isometric co-cycles
• Abstract :  The CCR-flows give the simplest example of a semigroup of endo-morphisms of the *-algebra of the set of all bounded linear operators in the Fock-space over  L^2(R_+), which enjoys the continuous tensor-product decomposition property  and thus produces the simplest example of  the so-called product systems. Using a “sto-time” in the Fock space one constructs a large class  of  new ” CCR-flows” ,each carrying  its own “product-system” .  Similarly,isometric evolutions in Fock space  can also be stopped with respect to a given stop-time .

• Date : 4 Jul.(Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Arturo Kohatsu-Higa  (Ritsumeikan University)
• Title: A probabilistic interpretation of the parametrix method

• Date : 27 Jun. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Jiro Akahori  (Ritsumeikan University)
• Title: TBA
• Abstract: TBA

• Date : 20 Jun. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Kazuhiro Yoshikawa (Ritsumeikan University)
• Title: An introduction to Loewner differential equation and Schramm Loewner Evolution(SLE)
• Abstract: This talk will be an outline of Loewner chains generated by curves, or by driving functions.

• Date : 13 Jun. (Thu)
• Place: W.W. 7th-floor, 4th lab. 
• Time : 16:30 – 18:00
• Speaker: Edouard Grenier (ENSTA ParisTech)
• Title: Quadratic Gaussian term structures of interest rates as multi-solitons